What does it mean to stagger the cutting edge of a handsaw

Sharpening out a hand saw edge with a grinder. According to the query related public information, the hand saw staggered open edge is to sharpen the knife to sharpen the edge out. When the knife is burned and calcined, the iron or steel on the surface will oxidize or have a high carbon content and become brittle. And the proverbial opening of the edge is where the knife is sharpened to grind this away, leaving the steel part exposed so that it will be sharper. Knives need to be sharpened before they are used, and there are both manual and machine sharpening methods, so that the sharpened knives are sharp and usable.